Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
gushing air vent in return
Bare with me fairly new to working on steam boiler systems. Have a boiler in an apartment building that has an air vent on a return up above boiler. Have a two pipe system. Boiler has not been taken care of. have cleaned FandT traps reworked return that runs along floor to get some grade to boiler. Lowered pressure setting to below 1 psi to get water from gushing out air vent is new. with lower psi it now just spits. have numerous return lives the tie into the return riser. seems to me it is filling up and pushing water out the vent. vent is seven inches of the pipe it is mounted on. any and all suggestion are appreciated.
measure the distance from the lowest horizontal return pipe, (probably the one with the air vent) to the boilers normal water line..divide that by 1.75 and that is the maximum number of ounces the boiler pressure can be allowed to go without water flooding the return..and that also doesn't allow any loss from friction..so in reality the boiler pressure would have to be a bit less even..i use a clear plastic tube temporarily attached to a boilers drain valve and trown up an over a ceiling pipe to 'see' how high the water is being pushed up the 'B' dimension pipes.gwgillplumbingandheating.com
Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.0
gushing return air vent
then vent is actually up high in between the floor joist. when i go back im gonna take a pic of the retun layout and attach it on here. the vent is prob a good three to four feet above boiler water level. thanks for the suggestion will def try that out. thanks0
Return pipes pitch
The wet return should be well below the boiler's waterline, but needs no pitch to get the water back to the boiler, as the condensate coming down from the dry return will keep the flow going. Think of a hose, with very slight pressure which has no problems with slope.
Give us some pictures of the boiler piping, as that may be shooting more water than steam up into the system, if mis-installed.--nbc0
This discussion has been closed.
- 121.3K All Categories
- 84K THE MAIN WALL
- 2.9K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 417 Carbon Monoxide Awareness
- 40 Chimneys & Flues
- 1.7K Domestic Hot Water
- 4.7K Gas Heating
- 119 Geothermal
- 155 Indoor-Air Quality
- 3K Oil Heating
- 56 Pipe Deterioration
- 771 Plumbing
- 5.4K Radiant Heating
- 362 Solar
- 14K Strictly Steam
- 3K Thermostats and Controls
- 51 Water Quality
- 625 Buy, Sell, Barter
- 38 Industry Classes
- 73 Job Opportunities
- 17 Recall Announcements